Card Duel Dimension War

In order to save the world, playing cards is essential. It's just a fight, why did you throw away the cards and start the fight! What! It turns out that if you can beat it, then you really play, and if you can't, then you play cards! So the protagonist Nebula traveled to a different world of cards, used cards in different ways to fight and duel, found his parents, and found the truth about the cards. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.